PROTOTYPE: PlzNavigate: use a Mojo data pipe to stream navigation data to the renderer.

content/browser/frame_host/navigator_impl.h

Index: content/browser/frame_host/navigator_impl.h
diff --git a/content/browser/frame_host/navigator_impl.h b/content/browser/frame_host/navigator_impl.h
index a8907689a6c21ffc41308d0597169c3bd7144264..77e5c65821a1db37112707b8669660da1e1f5449 100644
--- a/content/browser/frame_host/navigator_impl.h
+++ b/content/browser/frame_host/navigator_impl.h
@@ -80,7 +80,8 @@ class CONTENT_EXPORT NavigatorImpl : public Navigator {
                          scoped_refptr<ResourceRequestBody> body) override;
   void CommitNavigation(FrameTreeNode* frame_tree_node,
                         ResourceResponse* response,
-                        scoped_ptr<StreamHandle> body) override;
+                        scoped_ptr<StreamHandle> body,
+                        mojo::ScopedDataPipeConsumerHandle data_consumer_handle) override;
   void FailedNavigation(FrameTreeNode* frame_tree_node,
                         bool has_stale_copy_in_cache,
                         int error_code) override;